ATE262492T1 - METHOD FOR IMPROVING GLASS QUALITY - Google Patents

METHOD FOR IMPROVING GLASS QUALITY

Info

Publication number
ATE262492T1
ATE262492T1 AT00121736T AT00121736T ATE262492T1 AT E262492 T1 ATE262492 T1 AT E262492T1 AT 00121736 T AT00121736 T AT 00121736T AT 00121736 T AT00121736 T AT 00121736T AT E262492 T1 ATE262492 T1 AT E262492T1
Authority
AT
Austria
Prior art keywords
precious metal
melt
metal part
glass
electrode
Prior art date
Application number
AT00121736T
Other languages
German (de)
Inventor
Friedrich Dr Baucke
Johann Weber
Thomas Dr Pfeiffer
Gernat Roeth
Original Assignee
Schott Glas
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schott Glas filed Critical Schott Glas
Application granted granted Critical
Publication of ATE262492T1 publication Critical patent/ATE262492T1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
    • C03B5/167—Means for preventing damage to equipment, e.g. by molten glass, hot gases, batches
    • C03B5/1672—Use of materials therefor
    • C03B5/1675—Platinum group metals
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/02—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating
    • C03B5/027—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating by passing an electric current between electrodes immersed in the glass bath, i.e. by direct resistance heating
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
    • C03B5/163—Electrochemical treatments, e.g. to prevent bubbling or to create bubbles
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
    • C03B5/225—Refining
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B7/00—Distributors for the molten glass; Means for taking-off charges of molten glass; Producing the gob, e.g. controlling the gob shape, weight or delivery tact
    • C03B7/02—Forehearths, i.e. feeder channels
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
    • Y02P40/57—Improving the yield, e-g- reduction of reject rates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Glass Melting And Manufacturing (AREA)
  • Glass Compositions (AREA)

Abstract

Process for suppressing the formation of O2 gas bubbles on the contact surface between glass melts and a precious metal part of a glass melting device comprises connecting the precious metal part to one or more electrodes which are arranged at a distance from the part in the melt, and producing a potential drop between the electrode and the precious metal part so that a current flows. Preferred Features: The electrode is arranged in a region of the glass melt in which the O2 gas bubbles can be removed from the melt. The precious metal is Pt, Au, Re, other platinum group metals, and alloys of the above elements.
AT00121736T 1999-11-20 2000-10-05 METHOD FOR IMPROVING GLASS QUALITY ATE262492T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19955827A DE19955827B4 (en) 1999-11-20 1999-11-20 Method for suppressing the formation of O 2 gas bubbles at the contact surface between a molten glass and precious metal

Publications (1)

Publication Number Publication Date
ATE262492T1 true ATE262492T1 (en) 2004-04-15

Family

ID=7929695

Family Applications (1)

Application Number Title Priority Date Filing Date
AT00121736T ATE262492T1 (en) 1999-11-20 2000-10-05 METHOD FOR IMPROVING GLASS QUALITY

Country Status (6)

Country Link
US (1) US6629437B1 (en)
EP (1) EP1101740B1 (en)
JP (1) JP4165630B2 (en)
CN (1) CN1283571C (en)
AT (1) ATE262492T1 (en)
DE (2) DE19955827B4 (en)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE50112221D1 (en) 2000-09-04 2007-05-03 Schott Ag A method of suppressing oxygen bubble formation in glass melts, an apparatus therefor, and the use of the glass thus obtained
WO2002044115A2 (en) * 2000-11-30 2002-06-06 Schott Glas Coated metal element used for producing glass
DE10141585C2 (en) 2001-08-24 2003-10-02 Schott Glas Precious metal tube for guiding a glass melt
DE10231847B4 (en) * 2002-07-12 2006-04-13 Schott Ag Method for producing a low-bubble or bubble-free glass melt
US7032412B2 (en) * 2003-03-13 2006-04-25 Corning Incorporated Methods of manufacturing glass sheets with reduced blisters
US6993936B2 (en) * 2003-09-04 2006-02-07 Corning Incorporated System and method for suppressing the formation of oxygen inclusions and surface blisters in glass sheets and the resulting glass sheets
DE102004015577B4 (en) 2004-03-30 2012-08-23 Schott Ag Process for producing glass while avoiding bubbles on precious metal components
DE102004033714B4 (en) * 2004-07-13 2007-10-18 Schott Ag Device for electrical grounding of a glass float plant
US7475568B2 (en) * 2005-04-27 2009-01-13 Corning Incorporated Method of fining glass
US20060242996A1 (en) * 2005-04-27 2006-11-02 Gilbert Deangelis System and method for controlling the environment around one or more vessels in a glass manufacturing system
TWI327559B (en) * 2005-12-08 2010-07-21 Corning Inc Method of eliminating blisters in a glass making process
DE102006003531A1 (en) 2006-01-24 2007-08-02 Schott Ag Transporting, homogenizing and/or conditioning glass melt comprises adjusting residence time of melt in transporting and/or conditioning device using section of wall of device
DE102006003534A1 (en) * 2006-01-24 2007-08-02 Schott Ag Refining of optical glass with temperature-regulated electrodes
US20080057275A1 (en) * 2006-08-31 2008-03-06 Paul Richard Grzesik Method and apparatus for minimizing oxidation pitting of refractory metal vessels
JP2008266031A (en) * 2007-04-16 2008-11-06 Ohara Inc Method for producing optical glass
US8087262B2 (en) * 2008-11-18 2012-01-03 Corning Incorporated Platinum condensation abatement by electrostatic precipitation
DE102010037376A1 (en) 2009-09-15 2011-04-07 Schott Ag Method for the production of glass by processing a production aggregate, comprises heating a glass melt using alternating current by electrodes, which protrude in the glass melt, which consists of redox-buffer
DE102010007547A1 (en) 2010-02-11 2011-08-11 Schott Ag, 55122 Improving the glass quality of glass melts, comprises guiding the glass melt in a container with double shell, where interspace is filled with a molten glass present between the electrically insulated inner wall and outer wall
DE102010036627B4 (en) 2010-07-26 2013-01-17 Schott Ag Method and device for corrosion protection of electrodes during the temperature control of a molten glass
JP5840531B2 (en) * 2011-04-28 2016-01-06 Hoya株式会社 Manufacturing method of glass, manufacturing method of glass material for press molding, and manufacturing method of optical element
CN104671638B (en) * 2014-12-31 2017-08-29 彩虹（合肥）液晶玻璃有限公司 A kind of system and method for control noble metal channel atmospheric condition
JP6273233B2 (en) * 2015-06-23 2018-01-31 日本特殊陶業株式会社 Method for manufacturing electrochemical reaction cell stack
DE102016107577A1 (en) 2016-04-25 2017-10-26 Schott Ag Apparatus and method for producing glass products from a molten glass while avoiding blistering
KR20210054015A (en) * 2018-09-28 2021-05-12 코닝 인코포레이티드 Apparatus and method for mitigating electrochemical attack of precious metal components in glass manufacturing process
JP2022502335A (en) * 2018-09-28 2022-01-11 コーニング インコーポレイテッド Equipment and methods for mitigating electrochemical erosion of precious metal parts in the glassmaking process
CN110922030A (en) * 2019-12-05 2020-03-27 苏州卡利肯新光讯科技有限公司 Method and device for removing bubbles of molten glass
DE202020107535U1 (en) 2020-12-03 2021-04-28 Schott Ag UV-transparent glasses for eliminating methicillin-resistant Staphylococcus aureus
EP4091999A1 (en) 2021-05-21 2022-11-23 Schott Ag Glass having high uv transmittance and high solarization resistance
EP4091998A1 (en) 2021-05-21 2022-11-23 Schott Ag Glass having high uv transmittance and high solarization resistance

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201297A (en) 1922-05-16 1923-08-02 Arthur John Cave Improvements in and relating to press guards
US2122469A (en) * 1936-09-10 1938-07-05 Pittsburgh Plate Glass Co Apparatus for making glass
US2159361A (en) * 1936-11-30 1939-05-23 Owens Illinois Glass Co Electric furnace
FR994796A (en) * 1945-01-29 1951-11-22 Saint Gobain Improvement in furnaces for melting materials such as glass
NL138010C (en) * 1945-01-29
US2686820A (en) * 1950-07-04 1954-08-17 Saint Gobain Glass furnace and process for melting glass
FR1277999A (en) * 1960-10-03 1961-12-08 Saint Gobain Process for preventing or reducing corrosion of refractory parts in furnaces for melting materials such as glass
US3206295A (en) * 1962-01-02 1965-09-14 Bausch & Lomb Lined glass furnace
GB1167233A (en) * 1966-04-25 1969-10-15 Tokyo Shibaura Electric Co Apparatus for Melting Glass by Passing Current therethrough
DE2935416C2 (en) * 1979-09-01 1984-04-05 Sorg-GmbH & Co KG, 8770 Lohr Process for uniform heating of a glass stream in a feeder and device for carrying out this process
GB8323519D0 (en) * 1983-09-01 1983-10-05 Glaverbel Monitoring redox state of elements in glass
US4603980A (en) * 1984-02-03 1986-08-05 Owens-Corning Fiberglas Corporation Methods of measuring temperature and electrical resistivity in a molten glass stream
DE4207059C1 (en) * 1992-03-06 1993-10-21 Schott Glaswerke Process for the purification of oxidic melts
DE4324922C2 (en) * 1993-07-24 1995-08-31 Schott Glaswerke Use of a metal / metal oxide electrode
DE69724939T2 (en) * 1996-03-18 2004-07-15 Dynelec Corp., Columbus METHOD FOR PRODUCING GLASS
US5749932A (en) * 1996-03-29 1998-05-12 Battelle Memorial Institute Refractory electrodes for joule heating and methods of using same
US5785726A (en) * 1996-10-28 1998-07-28 Corning Incorporated Method of reducing bubbles at the vessel/glass interface in a glass manufacturing system

Also Published As

Publication number Publication date
JP2001172024A (en) 2001-06-26
JP4165630B2 (en) 2008-10-15
CN1283571C (en) 2006-11-08
CN1297854A (en) 2001-06-06
US6629437B1 (en) 2003-10-07
EP1101740A1 (en) 2001-05-23
DE19955827B4 (en) 2005-03-31
DE50005779D1 (en) 2004-04-29
EP1101740B1 (en) 2004-03-24
DE19955827A1 (en) 2001-06-07

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Legal Events

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REN Ceased due to non-payment of the annual fee